Talisman Energy Inc., Calgary, (NYSE, Toronto: TLM) plans to acquire a 60% interest in three concessions in the onshore Baltic Sea shale play in Poland from Oculis Investments, a subsidiary of San Leon Energy Plc, Dublin, (London AIM: SLE) for €1.5 million (approximately US$2.03) and 60% of drilling-related costs. San Leon says the assets, which are in the Gdansk area of northern Poland, may contain up to 6 trillion cubic feet. Under the agreement, Talisman will drill one well on each concession.